How should percussion be correctly performed during CPT?

Percussion during chest physiotherapy (CPT) is designed to help loosen secretions in the airways, making it easier for a patient to clear them through coughing. The correct technique involves cupping the hands to create an air pocket that will transmit the percussion's vibrations effectively to the chest wall. This cupping method allows for a rhythmical, forceful striking against the chest, which helps mobilize mucus.

Using the backs of cupped hands, a caregiver employs a combination of force and rhythm designed to stimulate the lung tissue while avoiding any harm to the ribs or underlying structures. This technique is not only effective at dislodging mucus but also minimizes discomfort for the patient.

In contrast, other methods, such as using flat hands or finger pads, do not generate enough force or vibration to achieve the desired effect of loosening secretions in the lungs. A flat hand would not create the necessary impact or air pocket to facilitate the percussion properly, and using finger pads would not provide the adequate surface area or force needed for effective percussion.